Update feedback_repository.py

src/expon/feedback/infrastructure/persistence/jpa/feedback_repository.py

@@ -30,4 +30,8 @@ class FeedbackRepository:
         return self.db.query(FeedbackORM).filter_by(user_id=user_id).all()
 
     def get_by_presentation(self, presentation_id):
-        return self.db.query(FeedbackORM).filter_by(presentation_id=presentation_id).all()
+        return self.db.query(FeedbackORM).filter_by(presentation_id=presentation_id).first()
+
+    def delete(self, feedback: FeedbackORM):
+        self.db.delete(feedback)
+        self.db.commit()